Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A581FE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N454LM · CUB CRAFTERS CC-11 Carbon Cub · operated by STORM KING ROOFING LLC

Hex
A581FE
Octal
51300776
Decimal
10,846,718
Country
US
Tail
N454LM
Type
CC11
No current signal · last broadcast Jul 25, 12:40 UTC
Flights observed
21
Distinct callsigns
1
Country
US
Last broadcast
Jul 25, 12:40 UTC

Last known position

Most recent position reported by Mode-S A581FE.

Country allocation

The ICAO 24-bit address A581FE falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 1 distinct

Callsign Airline Flights Last seen
N454LM - 21 2026-07-25

Recent flights last 21

DateFlightRouteTakeoffLandingDuration
2026-07-25 N454LM - Jul 25, 11:40 UTCJul 25, 12:40 UTC1h 0m
2026-07-24 N454LM - Jul 24, 20:10 UTCJul 24, 20:35 UTC25m
2026-07-24 N454LM - Jul 24, 14:00 UTCJul 24, 14:25 UTC25m
2026-07-24 N454LM - Jul 24, 11:50 UTCJul 24, 13:25 UTC1h 35m
2026-07-24 N454LM - Jul 24, 10:50 UTCJul 24, 11:10 UTC20m
2026-07-20 N454LM - Jul 20, 16:25 UTCJul 20, 16:40 UTC15m
2026-07-20 N454LM - Jul 20, 14:50 UTCJul 20, 15:45 UTC55m
2026-07-20 N454LM - Jul 20, 13:25 UTCJul 20, 13:35 UTC10m
2026-07-20 N454LM - Jul 20, 10:45 UTCJul 20, 11:00 UTC15m
2026-07-19 N454LM - Jul 19, 20:30 UTCJul 19, 21:00 UTC30m
2026-07-19 N454LM - Jul 19, 14:20 UTCJul 19, 15:05 UTC45m
2026-07-18 N454LM - Jul 18, 20:10 UTCJul 18, 20:40 UTC30m
2026-06-20 N454LM - Jun 20, 11:20 UTCJun 20, 11:49 UTC30m
2026-06-15 N454LM - Jun 15, 12:35 UTCJun 15, 12:45 UTC10m
2026-06-10 N454LM - Jun 10, 13:00 UTCJun 10, 13:55 UTC55m
2026-06-04 N454LM - Jun 4, 15:00 UTCJun 4, 15:20 UTC20m
2026-06-04 N454LM - Jun 4, 12:55 UTCJun 4, 13:05 UTC10m
2026-05-14 N454LM - May 14, 14:30 UTCMay 14, 14:40 UTC10m
2026-05-14 N454LM - May 14, 12:10 UTCMay 14, 12:20 UTC10m
2026-05-07 N454LM - May 7, 15:10 UTCMay 7, 15:20 UTC10m
2026-05-07 N454LM - May 7, 13:10 UTCMay 7, 13:20 UTC10m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the N454LM page for operator, model, and routing details .

Mode-S A581FE frequently asked

What is Mode-S code A581FE?
A581FE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N454LM.
Where is Mode-S A581FE registered?
Mode-S code A581FE is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A581FE broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 12:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A581FE, octal 51300776, decimal 10,846,718.
What flights does A581FE operate?
Mode-S A581FE has broadcast 1 distinct callsign, including N454LM.